These workbooks are part of a Mexican series of instructional materials designed for Spanish speaking adults who are in the process of becoming literate or have recently become literate in their native language. The workbooks are designed to teach skills needed to manage ordinary financial transactions and daily tasks requiring a knowledge of weights and measures. Topics covered include numbers up to eight figures; basic mathematical tasks; common fractions; mixed numbers; decimals; ratios; basic decimal functions; perimeter; plane geometry; calculating distance on maps; figuring percentages; and graphs. Numerous color photos are included. (Adjunct ERIC Clearinghouse for ESL Literacy Education) (CK)